Inverted incandescent gas-burner.



P. SGHROEDTER.

INVERTED INGANDESGENT GAS BURNER.

APPLICATION FILED APR. 26, 1912.

Patented Aug. 19, 1918.

"W Invem coLuMmA PLANOGRAPH CO.,WASH1NGTON, o, c.

PAUL SCI-IROEDTER,

0F BERLIN, GERMANY.

INVEE'IED INCANDESCENT GAS-BURNER.

Application filed April 26, 1912.

To all whom it may concern:

Be it known that I, PAUL SGHROEDTER, merchant, a subject of the Emperor of Germany, residing in Berlin, Germany, have invented certain new and useful Improvements in Inverted Incandescent Gas Burners, of which the following is a specification.

This invention relates to a burner for inverted incandescent gas light with a bell or dome shaped casing, from which the glass shade is so suspended that it engages the casing from the outside, while the suspension of the incandescent mantle from the burner nozzle is very simple and suitable; a by-flame, Which, avoids hitherto known drawbacks, being further provided on the burner.

The accompanying drawing shows the improved burner.

Figure 1 is a vertical central section through same, Fig. 2 is a cross-sectional plan of same on the line AB of Fig. 1, Fig. 3 is a side view, partly in section, of the bell-shaped burner casing with the supports for the shade, Fig. 4 is a side view of the mixing chamber which is screwed on the gas supply pipe, Fig. 5 is a side view of the burner tube with the nozzle, Fig. 6 is a section on the line CD of Fig. 5, showing thus a plan view of the burner nozzle, Figs. 7 and 7 show, respectively in a plan view and cross section, the annular holder for the mantle, and Fig. 8 is a fragmentary vertical section through the upper part of the glass shade.

The burner casing 1 has the shape of a bell or dome with cutout portions 2 in its upper part, so that proportionately thin stays 3 are left between the latter. Thereby, a certain spring action is obtained in such a way that at a pressure from above the roof of the bell can somewhat yield. These openings also permit of the radiation of the heat generated by the light. This circumstance is used for an extraordinarily simple attachment of the burner tube 4. For this purpose, the top of the bell-shaped burner casing is provided with a central depression 5, in the base of which the hole 6 for the passage of the nipple 7 of the mixing chamber 8 is arranged. The mixing chamber is brought into the position shown in Fig. 1, that is, the nipple 7 engaging in the hole 6, whereupon the burner tube 4: is passed up through a central hole in a bridge 9 extend- Specification of Letters Patent.

Patented A11 19,1913.

Serial No. 693,303.

ing transversely of and secured at its ends to the burner casing, and the tube screwed from outside over the screw-threads of the nipple 7. As the burner tube is screwed upon the mixing chamber an annular shoulder on said tube engages with the bottom of the bridge 9 tending to draw the top of the bell downward, clamping the casing between said shoulder and the mixing cham ber, and as the top of the bell has a certain springy or yielding action due to the openings therein, a very rigid connection of the burner tube is obtained and said tube maintained in its central position by the engagement thereof in the openings of the bridge 9 and the nozzle 8 in the opening in the depression 5.

Adjacent its lower end the burner casing is provided with laterally project-ing supports for a globe or shade 18. These supports in the present instance are located at three points in the circumference of the easing and consist of flaps 10, stamped or pressed out from the casing proper leaving openings 11 in the latter, and the flaps are bent up to form substantially V-shaped supports. The globe is placed in position from below the casing to engage outside thereof instead of inside the casing as is the usual practice, and has inwardly extending projections lt to engage in the V-shaped supports thereby providing an extremely simple and safe mounting for the globe. By this construction there will be an annular space 15 between the globe and burner casing to permit of the entrance of the combustion air. Furthermore, by this construction the necessity of a chimney or draft glass is obviated even should the globe be entirely closed at the bottom.

While the supports 12 are preferably pressed out from the walls of the casing as above set forth, it will be obvious that the same can be constructed separately and soldered or riveted thereto. Also, that while the V-shape of said supports is very suitable since the glass globe can thereby practically be immovably suspended therefrom, they may be modified in any way to suit any other requirements.

To carry the incandescent mantle 16 I provide an annular holder 17 having inwardly extending projections 18. The burner nozzle 19 is provided with laterally extending projections 20 having grooves 21. in the top. The mantle carrier 17 is placed on the burner nozzle from below so that the projections 18 on said carrier pass between. the nozzle projections 20' whereupon the holder, which is similar to a bayonet closure,

of the mantle holder has an inwardly eX- j gas lamp, of a dome-shaped burner casing,

tending annular flange 22 to prevent the holder from being shifted up too high with the consequent result of damaging the mantle when placing the same on the burner. My improved burner is also provided with a pilot light or by-fiame 23 so located that casing but above the incandescent mantle, whereby the lncandescent mantle 1s prevent ed from being damaged by the slight explosions which occur when the by-flame is:

lighted, which frequently occurs in. the use of pilot lights in connection with inverted gas mantles.

I claim:

1. An incandescent gas lamp, comprising in combination a dome-shaped burner-- casing lmy name this 11th day of April 1912,. in;

having cutout portions near its: top: to provide a yielding structure; a central depresr sion in the top of said casing with opening therein a mixing chamber to engage in said depression and having a portion to pass through the opening therein; a bridge extending transversely of the casing having a the mixing chamber, said tube having a shoulder to engage with the bottom of the bridge, substantially as and for the purpose 2. The combination in an incandescent and globe supports stamped out and project ing lateral-1y from said casing near the lower end, each of said supports comprising three flapsto; provide substantially V-shaped supports. the outlet orifice 24: is within the burner iin combination a burner casing; globe sup- 5 ports comprising flaps pressed out laterally from the casing and: bent up substantially in V-shape; and: a globe into which the casing jis. adapted to. extend having inwardly extending projections to engage in the V- shapedt portion ot the globe supports on the casing, substantially as and for the purpose 1 specified.

3. incandescent gas lamp, comprising In witness whereof I have hereunto signed the presence of two subscribing witnesses.

PAUL SCHROEDTER. Witnesses:

lNoLoEMAn HAUPT, HENRY HAsPER.

Copies. of this patent may be obtained for f ve cents each, by addressing the Commissioner of" Patents,

Washington, D. G. 

